Tag Archives: General relativity

In case you haven’t heard yet, gravitational waves have been detected

I won’t attempt to describe the implications.  For that, your best bet is to read it from one of the experts, Ethan Siegel: The First Detection Of Gravitational Waves Validates Einstein In A Whole New Way! Let’s hope those implications aren’t … Continue reading

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Dark matter might cause neutron stars to collapse into black holes

ratamacue0 called my attention to this interesting article on the possibility of dark matter “eating” neutron stars: Dark matter: Devourer of stars | Ars Technica. Neutron stars are collapsed stars that have used up all of their fusion fuel.  Typically what happens … Continue reading

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The movie ‘Interstellar’ and wormholes

The other day, I did a post on interstellar exploration which linked to one by Sten Odenwald on the problems with interstellar travel.  Well, he posted some follow-up remarks, expressing some surprise at the response, doubling down on the aspects of the limitations of … Continue reading

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Reaching the stars will require serious out-of-the-box thinking

Sten Odenwald, an astronomer with the National Institute of Aerospace, has an article up at HuffPost that many will find disheartening: The Dismal Future of Interstellar Travel | Dr. Sten Odenwald. I have been an avid science fiction reader all my life, but as … Continue reading

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Primers on detecting primordial gravity waves and cosmic inflation

First, Minute Physics takes a shot at explaining what the BICEP2 team actually found and how it relates to gravitational waves.  I think I’m going to have to watch this a second time to pick up everything. And Ethan Siegel … Continue reading

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First Direct Evidence of Cosmic Inflation – SpaceRef

Wow!  There were lots of rumors about this over the weekend.  Turns out that, in this case, the rumors were spot on. Almost 14 billion years ago, the universe we inhabit burst into existence in an extraordinary event that initiated … Continue reading

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Searching for empirical anomalies

Ars Technica has an article about the most accurate measurement yet of the mass of the electron.  It was an interesting article, particularly in describing how the scientists went about making the measurement. But I was struck by something said … Continue reading

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